1525752481 has 8 divisors (see below), whose sum is σ = 1664937504. Its totient is φ = 1386647520.

The previous prime is 1525752467. The next prime is 1525752521. The reversal of 1525752481 is 1842575251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1525752481 - 2⁷ = 1525752353 is a prime.

It is a super-2 number, since 2×1525752481² = 4655841266555310722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1525752281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24070 + ... + 60256.

It is an arithmetic number, because the mean of its divisors is an integer number (208117188).

Almost surely, 2^1525752481 is an apocalyptic number.

1525752481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1525752481 is a deficient number, since it is larger than the sum of its proper divisors (139185023).

1525752481 is a wasteful number, since it uses less digits than its factorization.

1525752481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40031.

The product of its digits is 112000, while the sum is 40.

The square root of 1525752481 is about 39060.8817232791. The cubic root of 1525752481 is about 1151.2280469327.

The spelling of 1525752481 in words is "one billion, five hundred twenty-five million, seven hundred fifty-two thousand, four hundred eighty-one".